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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Line has wrong coordinates when viewport width is reduced"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101004">101004</a>
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<th>Summary</th>
<td>Line has wrong coordinates when viewport width is reduced
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>13.0
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Drivers/DRI/i965
</td>
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<th>Assignee</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>b7.10110111@gmail.com
</td>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=131315" name="attach_131315" title="Test program">attachment 131315</a> <a href="attachment.cgi?id=131315&action=edit" title="Test program">[details]</a></span>
Test program
The attached test program draws a line. Its endpoint positions appear different
between i965 driver and llvmpipe. In program's initial state, the bug is
triggered. You can toggle the bug by pressing a key.
The bug triggers when glViewport is called with a width less than window width
(namely, 0.6*windowWidth in the test).
glxinfo reports:
OpenGL renderer string: Mesa DRI Intel(R) Haswell Server
OpenGL version string: 3.0 Mesa 13.0.6 (git-fcef88d)
Video controller from lspci:
Intel Corporation Xeon E3-1200 v3 Processor Integrated Graphics Controller (rev
06)
CPU name from /proc/cpuinfo:
Intel(R) Xeon(R) CPU E3-1226 v3 @ 3.30GHz</pre>
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</p>
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